Beside of what others have already written, i would like to add that there is not only the sky train near, what is indeed convenient, and to encourage people to take the boat going up and down the river to discover Bangkok. For me the nicest way to move, not fast, but not as cold as the public transport where u will be frozen to ice cream by the aircon if u have a long ride. Wimonpak will tell u how to find the river near, i am sure about that.